/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:13,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:13,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:13,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:13,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:13,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:13,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:13,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:13,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:13,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:13,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:13,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:13,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:13,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:13,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:13,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:13,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:13,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:13,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:13,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:13,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:13,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:13,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:13,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:13,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:13,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:13,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:13,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:13,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:13,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:13,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:13,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:13,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:13,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:13,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:13,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:13,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:13,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:13,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:13,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:13,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:13,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:06:13,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:13,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:13,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:13,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:13,905 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:13,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:13,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:13,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:13,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:13,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:13,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:13,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:13,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:13,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:13,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:13,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:13,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:13,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:13,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:13,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:13,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:13,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:13,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:13,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:13,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:13,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:13,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:13,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:13,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:13,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:06:14,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:14,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:14,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:14,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:14,451 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:14,452 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 09:06:14,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b85ce33fb/ae3473a12f104d559eee56cab423e79f/FLAGa5ec25da0 [2020-09-25 09:06:15,189 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:15,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 09:06:15,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b85ce33fb/ae3473a12f104d559eee56cab423e79f/FLAGa5ec25da0 [2020-09-25 09:06:15,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b85ce33fb/ae3473a12f104d559eee56cab423e79f [2020-09-25 09:06:15,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:15,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:15,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:15,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:15,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:15,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:15" (1/1) ... [2020-09-25 09:06:15,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:15, skipping insertion in model container [2020-09-25 09:06:15,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:15" (1/1) ... [2020-09-25 09:06:15,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:15,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:16,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:16,052 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:16,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:16,336 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:16,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16 WrapperNode [2020-09-25 09:06:16,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:16,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:16,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:16,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:16,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... [2020-09-25 09:06:16,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:16,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:16,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:16,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:16,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:16,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:16,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:16,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:16,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:18,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:18,026 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:18,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:18 BoogieIcfgContainer [2020-09-25 09:06:18,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:18,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:18,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:18,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:18,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:15" (1/3) ... [2020-09-25 09:06:18,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:18, skipping insertion in model container [2020-09-25 09:06:18,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:16" (2/3) ... [2020-09-25 09:06:18,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:18, skipping insertion in model container [2020-09-25 09:06:18,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:18" (3/3) ... [2020-09-25 09:06:18,051 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 09:06:18,064 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:18,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:18,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:18,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:18,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:18,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:18,140 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:18,140 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:18,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:18,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:18,141 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 09:06:18,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:18,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:18,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 09:06:18,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:18,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 09:06:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:19,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 09:06:19,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-09-25 09:06:19,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:19,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:06:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 09:06:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:06:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:19,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:19,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 09:06:19,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:19,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:19,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920443341] [2020-09-25 09:06:19,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:19,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:19,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:19,700 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:22,025 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 09:06:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:22,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 09:06:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:22,051 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 09:06:22,051 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 09:06:22,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 09:06:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 09:06:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 09:06:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 09:06:22,162 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 09:06:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:22,163 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 09:06:22,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 09:06:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:06:22,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:22,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:22,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:22,173 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:22,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 09:06:22,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:22,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659324492] [2020-09-25 09:06:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:22,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:06:27,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:06:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:06:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:06:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:06:27,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:27,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:27,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:27,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:27,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:27,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 09:06:28,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:28,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:28,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659324492] [2020-09-25 09:06:28,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:28,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:06:28,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746648493] [2020-09-25 09:06:28,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:06:28,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:28,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:06:28,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:28,140 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 12 states. [2020-09-25 09:06:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:31,328 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 09:06:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:31,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-09-25 09:06:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:31,335 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 09:06:31,335 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 09:06:31,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:06:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 09:06:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 09:06:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 09:06:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 09:06:31,377 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 140 [2020-09-25 09:06:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:31,378 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 09:06:31,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:06:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 09:06:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:06:31,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:31,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:31,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:31,386 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 09:06:31,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:31,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075178781] [2020-09-25 09:06:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:36,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:06:36,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4677 [2020-09-25 09:06:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:36,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:06:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:36,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:36,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:36,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:36,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 09:06:36,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:36,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:06:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:36,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075178781] [2020-09-25 09:06:36,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:36,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:36,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088920219] [2020-09-25 09:06:36,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:36,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:36,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:36,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:36,649 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 6 states. [2020-09-25 09:06:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:38,384 INFO L93 Difference]: Finished difference Result 1209 states and 1543 transitions. [2020-09-25 09:06:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:38,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-09-25 09:06:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:38,394 INFO L225 Difference]: With dead ends: 1209 [2020-09-25 09:06:38,394 INFO L226 Difference]: Without dead ends: 1207 [2020-09-25 09:06:38,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2020-09-25 09:06:38,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 861. [2020-09-25 09:06:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-09-25 09:06:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1083 transitions. [2020-09-25 09:06:38,459 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1083 transitions. Word has length 140 [2020-09-25 09:06:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:38,461 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1083 transitions. [2020-09-25 09:06:38,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1083 transitions. [2020-09-25 09:06:38,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:06:38,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:38,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:38,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:38,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 09:06:38,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:38,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284446960] [2020-09-25 09:06:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:06:42,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:42,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3875 [2020-09-25 09:06:42,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:06:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:42,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 09:06:42,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:06:42,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:42,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 09:06:42,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:42,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:42,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:42,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284446960] [2020-09-25 09:06:42,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:42,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:42,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750666965] [2020-09-25 09:06:42,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:42,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:42,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:42,755 INFO L87 Difference]: Start difference. First operand 861 states and 1083 transitions. Second operand 8 states. [2020-09-25 09:06:45,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:45,682 INFO L93 Difference]: Finished difference Result 2780 states and 3727 transitions. [2020-09-25 09:06:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:45,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 09:06:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:45,698 INFO L225 Difference]: With dead ends: 2780 [2020-09-25 09:06:45,699 INFO L226 Difference]: Without dead ends: 1934 [2020-09-25 09:06:45,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:06:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-09-25 09:06:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1682. [2020-09-25 09:06:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-09-25 09:06:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2222 transitions. [2020-09-25 09:06:45,787 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2222 transitions. Word has length 146 [2020-09-25 09:06:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:45,787 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 2222 transitions. [2020-09-25 09:06:45,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2222 transitions. [2020-09-25 09:06:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 09:06:45,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:45,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:45,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:45,793 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1882471934, now seen corresponding path program 1 times [2020-09-25 09:06:45,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:45,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291680559] [2020-09-25 09:06:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 09:06:50,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4779 [2020-09-25 09:06:50,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 09:06:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:50,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:50,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:50,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:51,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:51,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 09:06:51,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 09:06:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:51,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:06:51,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:51,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291680559] [2020-09-25 09:06:51,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:51,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:51,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082765457] [2020-09-25 09:06:51,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:51,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:51,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:51,473 INFO L87 Difference]: Start difference. First operand 1682 states and 2222 transitions. Second operand 10 states. [2020-09-25 09:06:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:54,744 INFO L93 Difference]: Finished difference Result 4156 states and 5610 transitions. [2020-09-25 09:06:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:06:54,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 09:06:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:54,758 INFO L225 Difference]: With dead ends: 4156 [2020-09-25 09:06:54,758 INFO L226 Difference]: Without dead ends: 2611 [2020-09-25 09:06:54,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-09-25 09:06:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2439. [2020-09-25 09:06:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2439 states. [2020-09-25 09:06:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 3142 transitions. [2020-09-25 09:06:54,837 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 3142 transitions. Word has length 179 [2020-09-25 09:06:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:54,838 INFO L479 AbstractCegarLoop]: Abstraction has 2439 states and 3142 transitions. [2020-09-25 09:06:54,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 3142 transitions. [2020-09-25 09:06:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 09:06:54,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:54,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:54,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:54,843 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -744492161, now seen corresponding path program 1 times [2020-09-25 09:06:54,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:54,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640563999] [2020-09-25 09:06:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:58,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 09:06:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:06:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3822 [2020-09-25 09:06:58,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:58,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 09:06:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:58,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:58,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:59,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 09:06:59,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 09:06:59,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:59,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:06:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:59,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640563999] [2020-09-25 09:06:59,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:59,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:59,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439065423] [2020-09-25 09:06:59,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:59,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:59,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:59,398 INFO L87 Difference]: Start difference. First operand 2439 states and 3142 transitions. Second operand 10 states. [2020-09-25 09:07:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:01,562 INFO L93 Difference]: Finished difference Result 4744 states and 6116 transitions. [2020-09-25 09:07:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:01,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 184 [2020-09-25 09:07:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:01,577 INFO L225 Difference]: With dead ends: 4744 [2020-09-25 09:07:01,577 INFO L226 Difference]: Without dead ends: 2439 [2020-09-25 09:07:01,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:07:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-09-25 09:07:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2435. [2020-09-25 09:07:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2435 states. [2020-09-25 09:07:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 3124 transitions. [2020-09-25 09:07:01,660 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 3124 transitions. Word has length 184 [2020-09-25 09:07:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:01,661 INFO L479 AbstractCegarLoop]: Abstraction has 2435 states and 3124 transitions. [2020-09-25 09:07:01,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:07:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 3124 transitions. [2020-09-25 09:07:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 09:07:01,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:01,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:01,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:07:01,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash -94451881, now seen corresponding path program 1 times [2020-09-25 09:07:01,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:01,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534464698] [2020-09-25 09:07:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking...